:root{
  --ink:#1d2733; --primary:#0a2e4d; --primary-2:#11446e; --accent:#c8102e;
  --gold:#c8102e; --gold-2:#9fc0da; --gold-soft:#cfe0ee; --gold-line:rgba(17,68,110,.22);
  --gold-text:#9e0c24;
  --blue:#2a6ea8; --bg:#ffffff; --bg-soft:#f6f8fa; --line:#e3e9f0;
  --muted:#52606d; --shadow:0 20px 54px -22px rgba(6,18,32,.5);
  --radius:14px; --maxw:1200px;
  --ff:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ff);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:66px 0}
.section.soft{background:var(--bg-soft)}
.section-title{text-align:center;margin-bottom:38px}
.section-title .ey{display:inline-flex;align-items:center;gap:12px;color:var(--gold-text);
  letter-spacing:.3em;font-size:12px;font-weight:700;text-transform:uppercase}
.section-title .ey::before,.section-title .ey::after{content:"";width:36px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent))}
.section-title .ey::after{background:linear-gradient(90deg,var(--accent),transparent)}
.section-title h2{font-size:clamp(25px,3.2vw,36px);margin:14px 0 0;letter-spacing:.06em;font-weight:800}
.section-title h2::after{content:"";display:block;width:52px;height:2px;margin:16px auto 0;
  background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.section-title p{color:var(--muted);max-width:640px;margin:14px auto 0;font-size:14.5px}

/* top bar */
.topbar{background:linear-gradient(90deg,#0a2e4d,#11446e 55%,#0a2e4d);color:#c8d2dc;font-size:13px;border-bottom:1px solid rgba(17,68,110,.25)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:42px}
.topbar a{color:#c8d2dc}
.topbar .lang{display:flex;align-items:center;gap:6px;line-height:1}
.topbar .lang a{padding:4px 11px;border-radius:999px;text-decoration:none;letter-spacing:.3px;
  border:1px solid transparent;transition:background .18s ease,border-color .18s ease,color .18s ease}
.topbar .lang a:hover{background:rgba(255,255,255,.13);color:#fff}
.topbar .lang a.on{background:rgba(224,168,46,.16);border-color:rgba(224,168,46,.55);color:#f2d089;font-weight:700}
.topbar .lang i{opacity:.35;font-style:normal}
@media (max-width:640px){.topbar .lang a{padding:4px 8px;font-size:12px}}

/* header */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--gold-line);
  box-shadow:0 12px 30px -26px rgba(6,18,32,.55)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;flex:0 0 auto}
.brand-logo{height:52px;width:auto;max-width:300px;object-fit:contain;display:block}
.menu{display:flex;align-items:center;gap:4px;height:100%}
.menu>li{position:relative;height:100%;display:flex;align-items:center}
.menu>li>a{padding:0 16px;height:100%;display:flex;align-items:center;font-size:15px;font-weight:500;
  color:var(--ink);transition:color .2s;position:relative}
.menu>li>a::after{content:"";position:absolute;left:16px;right:16px;bottom:18px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.menu>li:hover>a,.menu>li>a.active{color:var(--primary)}
.menu>li:hover>a::after,.menu>li>a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;height:100%}
.nav-search{display:flex;align-items:center;margin-left:14px;flex:0 0 auto}
.nav-search input{border:1px solid var(--line);border-right:none;padding:0 12px;height:36px;width:158px;
  border-radius:4px 0 0 4px;font-size:13px;outline:none;background:var(--bg-soft);font-family:inherit;color:var(--ink);transition:.2s}
.nav-search input:focus{border-color:var(--accent);background:#fff}
.nav-search button{border:none;background:var(--accent);color:#fff;padding:0 14px;height:36px;border-radius:0 4px 4px 0;
  cursor:pointer;font-size:13px;font-family:inherit;transition:.2s}
.nav-search button:hover{background:var(--gold-text)}
.mobile-menu .mm-search{border-bottom:1px solid var(--line);padding:2px 0 14px}
.mobile-menu .nav-search{margin:12px 0 0}
.mobile-menu .nav-search input{flex:1;width:auto}

/* dropdown */
.drop{position:absolute;top:74px;left:50%;transform:translateX(-50%) translateY(8px);
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);
  padding:10px;min-width:170px;opacity:0;visibility:hidden;transition:.22s;pointer-events:none}
.menu>li:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.drop a{display:block;padding:9px 14px;border-radius:8px;font-size:14px;color:var(--muted)}
.drop a:hover{background:var(--bg-soft);color:var(--primary)}

/* mega menu */
.mega{position:absolute;top:74px;left:50%;transform:translateX(-50%) translateY(8px);
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);
  padding:22px 26px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;width:940px;
  opacity:0;visibility:hidden;transition:.22s;pointer-events:none}
.menu>li:hover .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
/* 导航分类三级：一级=列标题，二级=分组小标题，三级=缩进圆点链接 */
.mega h4{margin:0 0 6px;padding:0;border-bottom:1px solid var(--line);padding-bottom:7px}
.mega h4.folded{margin-bottom:4px}
.mega .mega-top{display:flex;align-items:center;gap:4px;font-size:14px;font-weight:800;color:var(--primary);
  padding:0;line-height:1.5}
.mega .mega-top:hover{color:var(--gold-text)}
.mega .mega-top .mega-t{flex:1;min-width:0}
.mega .mega-top em{font-style:normal;font-size:10.5px;font-weight:600;color:var(--muted);
  background:var(--bg-soft);border-radius:999px;padding:1px 7px;margin-left:2px}
/* 二级分组 */
.mega .mega-grps{margin-top:10px}
.mega .mega-grp+.mega-grp{margin-top:11px;padding-top:9px;border-top:1px dashed var(--line)}
.mega .mega-grp-t>a{font-size:12.5px;font-weight:600;color:var(--primary);padding:0;line-height:1.75}
.mega .mega-grp-t>a:hover{color:var(--gold-text)}
/* 末级链接：二级若无下级分类，则按「最终极分类」展示，样式与三级完全一致 */
.mega .mega-sub+.mega-sub{margin-top:9px}
.mega .mega-leaf{margin-top:4px}
.mega-sub{list-style:none;margin:2px 0 0;padding:0}
.mega .mega-a{position:relative;display:block;padding:2px 0 2px 13px;font-size:12px;font-weight:400;
  color:#7b8895;line-height:1.6;transition:color .16s}
.mega .mega-a::before{content:'';position:absolute;left:2px;top:11px;width:3px;height:3px;
  border-radius:50%;background:#dfe5ec}
.mega .mega-a:hover{background:none;color:var(--gold-text)}
.mega .mega-a:hover::before{background:var(--gold-text)}
/* 移动端分类树：默认收起，点 .mm-arrow 逐级展开 */
.mobile-menu .mm-tree{list-style:none;margin:0;padding:0;display:none}
.mobile-menu .mm-tree.open{display:block}
.mobile-menu .mm-tree a{display:block;flex:1;min-width:0;padding:9px 10px;font-size:13.5px;color:var(--muted);
  border-left:2px solid var(--line);margin-top:2px}
.mobile-menu .mm-tree a:hover,.mobile-menu .mm-tree a:active{color:var(--accent);border-left-color:var(--accent)}
.mobile-menu .mm-row{display:flex;align-items:center;gap:2px;padding-right:2px}
.mobile-menu .mm-l1>.mm-row>a{font-weight:700;color:var(--primary)}
.mobile-menu .mm-l3 a{padding-left:26px;font-size:13px}
/* 展开箭头 */
.mm-arrow{flex:0 0 auto;width:30px;height:24px;border:0;background:none;padding:0;margin:0 4px 2px 0;
  cursor:pointer;position:relative}
.mm-arrow::after{content:'';display:block;width:6px;height:6px;margin:auto 0 0 auto;
  border-right:2px solid #b9c3d0;border-bottom:2px solid #b9c3d0;transform:rotate(45deg);
  transform-origin:center;transition:transform .2s,margin .2s}
.mm-arrow.open::after{transform:rotate(-135deg);margin:auto auto 0 auto}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;
  transition:.22s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,#e23a4e,var(--accent) 60%,#9e0c24);color:#fff;
  box-shadow:0 12px 26px -14px rgba(200,16,46,.42)}
.btn-primary:hover{transform:translateY(-2px);background:linear-gradient(135deg,#d6283c,var(--accent) 60%,#9e0c24);
  box-shadow:0 18px 34px -14px rgba(200,16,46,.5)}
.btn-ghost{border-color:rgba(127,176,214,.6);color:#11446e}
.btn-ghost:hover{background:rgba(200,16,46,.08);border-color:var(--accent);color:var(--accent)}
.btn-line{background:#fff;color:var(--primary);border-color:var(--line)}
.btn-line:hover{border-color:var(--accent);color:var(--primary)}

/* hero */
.hero{position:relative;color:#fff;overflow:hidden;background:
  radial-gradient(1200px 600px at 82% -12%,rgba(127,176,214,.22),transparent 62%),
  linear-gradient(135deg,#0a2e4d 0%,#0e2540 52%,#11446e 100%)}
.hero .grid-pat{position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:54px 54px;mask-image:radial-gradient(circle at 60% 40%,#000,transparent 80%)}
.hero .wrap{position:relative;padding:62px 24px 70px;display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
.hero .ey{color:var(--accent);letter-spacing:.24em;font-weight:700;font-size:13px}
.hero h1{font-size:clamp(26px,3.8vw,42px);line-height:1.18;margin:12px 0 14px;font-weight:800;letter-spacing:.01em}
.hero p.lead{color:#c8d2dc;font-size:15.5px;max-width:520px;margin-bottom:22px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .panel{background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.04));
  border:1px solid rgba(127,176,214,.35);border-radius:16px;padding:22px;backdrop-filter:blur(6px)}
.hero .panel h3{font-size:15px;color:var(--accent);letter-spacing:.1em;margin-bottom:12px}
.hero .panel .row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.18);font-size:13.5px}
.hero .panel .row:last-child{border-bottom:0}
.hero .panel .row b{color:#fff;font-weight:600}

/* 首页导航下方：大图轮播 */
.banner-slider{position:relative;z-index:1;overflow:hidden;background:#fff}
.banner-slider .bs-track{position:relative;width:100%;aspect-ratio:1920/550}
.banner-slider .bs-slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease;z-index:1;display:block}
.banner-slider .bs-slide.on{opacity:1;z-index:2}
.banner-slider .bs-slide img{width:100%;height:100%;object-fit:cover;display:block}
.banner-slider .bs-slide.on img{animation:bsZoom 7s ease-out both}
@keyframes bsZoom{from{transform:scale(1.07)}to{transform:scale(1)}}
.bs-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:6;width:50px;height:50px;border:0;
  border-radius:50%;background:rgba(6,18,32,.5);color:#fff;font-size:26px;line-height:1;cursor:pointer;
  align-items:center;justify-content:center;transition:.22s;backdrop-filter:blur(4px);font-family:Georgia,serif}
.bs-arrow.prev{left:26px;display:flex;padding-right:3px}
.bs-arrow.next{right:26px;display:flex;padding-left:3px}
.bs-arrow:hover{background:var(--accent);color:var(--primary)}
.bs-dots{position:absolute;left:0;right:0;bottom:78px;z-index:6;display:flex;justify-content:center;gap:10px}
.bs-dots i{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.55);cursor:pointer;
  transition:.25s;box-shadow:0 1px 4px rgba(0,0,0,.35)}
.bs-dots i.on{background:var(--accent);width:34px;border-radius:6px}
.banner-slider .bs-curve{position:absolute;left:0;right:0;bottom:0;height:62px;z-index:5;pointer-events:none;
  background:#fff;
  -webkit-mask:url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHZpZXdCb3g9JzAgMCAxMjAwIDcwJyBwcmVzZXJ2ZUFzcGVjdFJhdGlvPSdub25lJz48cGF0aCBkPSdNMCw3MCBMMTIwMCw3MCBMMTIwMCwzNSBRNjAwLDAgMCwzNSBaJyBmaWxsPScjMDAwJy8+PC9zdmc+") no-repeat top center / 100% 62px;
  mask:url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHZpZXdCb3g9JzAgMCAxMjAwIDcwJyBwcmVzZXJ2ZUFzcGVjdFJhdGlvPSdub25lJz48cGF0aCBkPSdNMCw3MCBMMTIwMCw3MCBMMTIwMCwzNSBRNjAwLDAgMCwzNSBaJyBmaWxsPScjMDAwJy8+PC9zdmc+") no-repeat top center / 100% 62px}
/* hero 叠层：背景大图之上叠加文字 + 产品图 */
.bs-track::after{content:"";position:absolute;inset:0;z-index:3;pointer-events:none;
  background:linear-gradient(90deg,rgba(6,18,32,.82),rgba(6,18,32,.48) 50%,rgba(6,18,32,.12))}
.bs-overlay{position:absolute;inset:0;z-index:4;display:flex;align-items:center;pointer-events:none}
.bs-overlay .bs-ov-in{display:flex;align-items:center;justify-content:space-between;gap:34px;width:100%}
.bs-txt{max-width:600px;color:#fff}
.bs-ey{display:inline-block;font-size:12px;letter-spacing:.2em;font-weight:700;color:#fff;
  background:var(--accent);padding:5px 12px;border-radius:4px;margin-bottom:16px}
.bs-h{font-size:clamp(25px,3.2vw,42px);line-height:1.26;font-weight:800;color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.5)}
.bs-p{margin-top:13px;font-size:15px;color:rgba(255,255,255,.9);max-width:520px;text-shadow:0 1px 10px rgba(0,0,0,.45)}
.bs-btns{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.bs-btns a{pointer-events:auto}
.bs-btn-line{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:999px;
  border:1px solid rgba(255,255,255,.8);color:#fff;font-weight:600;font-size:15px;transition:.22s}
.bs-btn-line:hover{background:#fff;color:var(--primary)}
.bs-pcard{pointer-events:auto;flex:0 0 auto;display:flex;flex-direction:column;align-items:center;background:none;transition:.25s}
.bs-pcard img{height:238px;width:auto;max-width:340px;object-fit:contain;transition:.25s;
  filter:drop-shadow(0 20px 30px rgba(0,0,0,.5))}
.bs-pcard:hover img{transform:translateY(-6px);filter:drop-shadow(0 26px 34px rgba(0,0,0,.6))}
.bs-pcard span{display:block;margin-top:12px;font-size:14px;font-weight:700;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.55)}
/* 首页 banner 产品轮播：切换时淡出 → 换图 → 淡入 */
.bs-pcard img,.bs-pcard span{transition:opacity .5s ease,transform .25s ease,filter .25s ease}
.bs-pcard.is-fade img,.bs-pcard.is-fade span{opacity:0;transition:opacity .35s ease}
@media(max-width:1024px){
  .bs-txt{max-width:520px}
  .bs-pcard img{height:188px}
}
@media(max-width:860px){
  .bs-pcard{display:none}
  .bs-overlay .bs-ov-in{justify-content:flex-start}
}
@media(max-width:620px){
  .bs-ey{font-size:11px;margin-bottom:10px}
  .bs-h{font-size:21px}
  .bs-p{display:none}
  .bs-btns{margin-top:14px}
  .bs-btns .btn,.bs-btn-line{padding:9px 18px;font-size:13px}
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* cards grid */
.grid{display:grid;gap:20px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.25s;
  position:relative;overflow:hidden;display:block}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--accent),rgba(200,16,46,.06));transform:scaleX(0);transform-origin:left;transition:transform .34s}
.card:hover::before{transform:scaleX(1)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(17,68,110,.34)}
.card .ic{width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0a2e4d,#11446e);color:var(--gold-2);margin-bottom:14px;
  box-shadow:inset 0 0 0 1px rgba(17,68,110,.42)}
/* 卡片序号（选购要求等有序条目） */
.card .num{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;
  border-radius:50%;background:rgba(17,68,110,.08);color:var(--primary-2);font-weight:700;font-size:14px;
  margin-bottom:10px;border:1px solid rgba(17,68,110,.18)}
.card h3{font-size:17.5px;margin-bottom:6px}
.card p{color:var(--muted);font-size:14px}
.card .more{display:inline-block;margin-top:14px;color:var(--primary-2);font-weight:600;font-size:14px}
.card .more::after{content:"→";margin-left:6px;transition:.2s}
.card:hover .more::after{margin-left:12px}

/* 询价引导块（首页大图下方，需盖在大图之上） */
.cta-card{position:relative;z-index:8;background:linear-gradient(135deg,#0a2e4d,#11446e);color:#fff;border:0;padding:28px 30px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px;box-shadow:var(--shadow),inset 0 1px 0 rgba(159,192,218,.22)}
.cta-card:hover{transform:none}
.cta-card h3{color:#fff;font-size:22px;margin:0}
.cta-card p{color:#c8d2dc;margin-top:6px;font-size:14.5px}

/* feature list */
.feat{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.feat .media{aspect-ratio:4/3;border-radius:var(--radius);background:
  linear-gradient(135deg,#0a2e4d,#11446e);position:relative;overflow:hidden}
.feat .media .ring{position:absolute;border:1px solid rgba(255,255,255,.25);border-radius:50%}
ul.ticks{list-style:none;margin-top:14px}
ul.ticks li{padding:8px 0 8px 30px;position:relative;color:#3b4553;font-size:14.5px}
ul.ticks li::before{content:"";position:absolute;left:0;top:13px;width:17px;height:17px;border-radius:50%;
  background:var(--accent);box-shadow:inset 0 0 0 4px #fff,0 0 0 1px var(--accent)}
ul.ticks li b{color:var(--ink)}

/* 首页产品系列卡（带真实产品图，四张等高对齐） */
.pcat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
.pcat{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;transition:.25s;
  display:flex;flex-direction:column;height:100%}
.pcat::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--accent),rgba(200,16,46,.06));transform:scaleX(0);transform-origin:left;transition:transform .34s}
.pcat:hover::before{transform:scaleX(1)}
.pcat:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(17,68,110,.34)}
.pcat-img{height:132px;background:#eef3f8;border:1px solid var(--line);border-radius:9px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:12px;flex:0 0 auto}
.pcat-img img{max-width:100%;max-height:100%;object-fit:contain;padding:9px;transition:.35s}
.pcat:hover .pcat-img img{transform:scale(1.05)}
.pcat-h{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;min-height:22px}
.pcat-h h4{font-size:16.5px;line-height:1.2}
.pcat-h small{color:var(--gold-text);font-size:10.5px;letter-spacing:.14em;font-weight:700}
.pcat-cats{color:var(--muted);font-size:12.5px;line-height:1.65;margin:8px 0 12px;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:41px}
.pcat-foot{display:flex;justify-content:space-between;align-items:center;gap:8px;
  border-top:1px solid var(--gold-line);padding-top:10px;margin-top:auto}
.pcat-n{color:var(--gold-text);font-weight:700;font-size:12.5px;white-space:nowrap}
.pcat-foot .more{color:var(--primary-2);font-weight:600;font-size:13.5px;white-space:nowrap}
.pcat-foot .more::after{content:"→";margin-left:5px;transition:.2s}
.pcat:hover .pcat-foot .more::after{margin-left:10px}

/* 首页：产品分类总览（1级系列 / 2级类别 / 3级型号 三级树） */
.catalog{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
.cat-col{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 16px 18px;transition:.25s}
.cat-col::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--accent),rgba(200,16,46,.06));transform:scaleX(0);transform-origin:left;transition:transform .34s}
.cat-col:hover::before{transform:scaleX(1)}
.cat-col:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(17,68,110,.34)}
.badge{flex:0 0 auto;width:18px;height:18px;border-radius:4px;color:#fff;font-size:11px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center}
.badge.b1{background:var(--primary)}
.badge.b2{background:var(--gold-text)}
.cl1{display:flex;align-items:center;gap:8px;padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid var(--gold-line)}
.cl1 h3{font-size:17px;line-height:1.2}
.cl1 small{margin-left:auto;color:var(--muted);font-size:12px;white-space:nowrap}
.cl2{display:flex;align-items:center;gap:7px;margin:12px 0 6px}
.cl2-n{font-size:13.5px;font-weight:600;color:var(--primary)}
.cl2-n:hover{color:var(--gold-text)}
.cl3{display:flex;flex-wrap:wrap;gap:6px;padding-left:25px}
.ctag{background:var(--bg-soft);border:1px solid var(--line);color:var(--muted);font-size:12px;
  padding:3px 9px;border-radius:999px;transition:.18s;line-height:1.5}
.ctag:hover{background:rgba(17,68,110,.1);border-color:var(--accent);color:var(--accent)}

/* ================= 产品页：1级 / 2级 / 3级 分类 ================= */
.plist{display:grid;grid-template-columns:248px 1fr;gap:24px;align-items:start}
.ptree{position:sticky;top:94px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:15px 13px}
.ptree-t{font-weight:800;color:var(--primary);font-size:15px;padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:8px;display:flex;justify-content:space-between;align-items:center}
.ptree-t em{font-style:normal;font-size:11px;color:var(--muted);font-weight:600}
.ptree ul{list-style:none;margin:0;padding:0}
.ptree-g>ul>li{position:relative}
.ptree .ptree-l{display:flex;align-items:center;gap:6px;padding:5px 7px;border-radius:6px;
  font-size:13px;color:#3b4553;line-height:1.35;transition:background .18s,color .18s}
.ptree .ptree-l:hover{background:var(--bg-soft);color:var(--primary)}
.ptree .ptree-l .n{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ptree .ptree-l small{flex:0 0 auto;color:var(--muted);font-size:11px;font-weight:700}

.lvmain{display:grid;gap:20px}
.lv1{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.lv1-h{position:relative;padding:18px 22px;background:linear-gradient(135deg,#0a2e4d,#11446e);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;box-shadow:inset 0 3px 0 var(--accent)}
.lv1-h .en{color:var(--accent);font-size:11px;letter-spacing:.2em;font-weight:700}
.lv1-h h3{font-size:21px;margin:3px 0}
.lv1-h p{color:#c8d2dc;font-size:13px;margin:0;max-width:660px}
.lv1-h .cnt{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:5px 14px;font-size:12.5px;color:#fff;white-space:nowrap}
.lv2{padding:16px 22px;border-top:1px solid var(--line)}
.lv2-branch{padding:12px 22px;background:#f8fafc}
.lv2-branch .lv2-h{margin-bottom:0}
.lv2-h{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:4px}
.lv2-h .b2{background:var(--gold-text);color:#fff;font-size:10.5px;font-weight:700;border-radius:4px;padding:1.5px 6px}
.lv2-h h4{font-size:16px;color:var(--primary)}
.lv2-h small{color:var(--muted);font-size:12.5px;font-weight:500}
.lv2-d{color:var(--muted);font-size:12.5px;margin-bottom:12px}
.lv3g{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.lv3{position:relative;border:1px solid var(--line);border-radius:9px;overflow:hidden;transition:.22s;background:#fff;display:block}
.lv3::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;z-index:2;
  background:linear-gradient(90deg,var(--accent),rgba(200,16,46,.05));transform:scaleX(0);transform-origin:left;transition:transform .34s}
.lv3:hover::before{transform:scaleX(1)}
.lv3:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(17,68,110,.34)}
.lv3 .im{height:110px;background:#eef3f8;display:flex;align-items:center;justify-content:center;padding:9px;border-bottom:1px solid var(--line)}
.lv3 .im img{max-width:100%;max-height:100%;object-fit:contain;transition:.3s}
.lv3:hover .im img{transform:scale(1.06)}
.lv3 .im.noimg{color:#c2bdb1;flex-direction:column;gap:4px}
.lv3 .im.noimg span{font-size:10.5px;letter-spacing:.06em;color:#a5a096}
.lv3 .tx{padding:8px 10px 9px}
.lv3 .n{display:block;font-size:12.8px;line-height:1.35;color:var(--ink)}
.lv3 .m{display:block;font-size:11px;color:var(--gold-text);margin-top:3px;font-weight:600}
.lvtabs{display:none}
.lv1,.lv2,.lv3{scroll-margin-top:100px}

/* news */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news .item{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.25s;display:block}
.news .item::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;z-index:2;
  background:linear-gradient(90deg,var(--accent),rgba(200,16,46,.05));transform:scaleX(0);transform-origin:left;transition:transform .34s}
.news .item:hover::before{transform:scaleX(1)}
.news .item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.news .thumb{height:142px;background:linear-gradient(135deg,#0a2e4d,#11446e);position:relative}
.news .thumb .date{position:absolute;left:14px;bottom:14px;background:#fff;border-radius:8px;padding:5px 11px;text-align:center}
.news .thumb .date b{display:block;font-size:19px;color:var(--primary);line-height:1}
.news .thumb .date small{font-size:10.5px;color:var(--muted)}
.news .body{padding:16px}
.news .tag{font-size:11.5px;color:var(--gold-text);font-weight:700;letter-spacing:.1em}
.news .body h4{font-size:16px;margin:6px 0 8px;line-height:1.4}
.news .body p{color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.info li{list-style:none;display:flex;gap:13px;padding:11px 0;border-bottom:1px solid var(--line)}
.info .ic{color:var(--primary-2);flex:0 0 auto}
.info b{color:var(--ink)}
.map{height:280px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(135deg,#f2f0ea,#e6e2d8);position:relative;overflow:hidden}
.map .pin{position:absolute;left:50%;top:46%;transform:translate(-50%,-100%);color:var(--primary)}
.map .cap{position:absolute;left:16px;bottom:14px;background:#fff;border-radius:8px;padding:8px 12px;font-size:13px;color:var(--muted)}
form.fm{display:grid;gap:14px}
form.fm input,form.fm textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:14px;background:#fff}
form.fm input:focus,form.fm textarea:focus{outline:none;border-color:var(--primary-2);box-shadow:0 0 0 3px rgba(17,68,110,.18)}
form.fm .row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
/* 留言表单的行内校验提示 */
form.fm .fm-field{display:block}
form.fm .fm-invalid{border-color:#c8102e !important;box-shadow:0 0 0 3px rgba(200,16,46,.12) !important}
form.fm .fm-err{display:block;min-height:18px;margin:4px 0 2px;font-size:12px;line-height:1.4;color:#c8102e}
form.fm .form-msg{margin-top:8px;font-size:13px;color:var(--primary-2)}
form.fm .form-msg.is-err{color:#c8102e}
form.fm .form-msg.is-ok{color:#1f8a4c}

/* footer（shttv 版式：浅底 4 栏） */
footer{background:#f6f8fa;color:var(--muted);padding:48px 0 22px;border-top:1px solid var(--line)}
footer .f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
footer h4{position:relative;color:var(--primary);font-size:15px;margin-bottom:16px;padding-left:12px}
footer h4::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;background:var(--accent)}
footer a{display:block;color:var(--muted);font-size:13.5px;margin-bottom:8px}
footer a:hover{color:var(--accent)}
footer .f-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
footer .f-logo img{height:34px;width:auto}
footer .f-logo b{color:var(--primary);font-size:16px}
footer .f-contact p{margin-bottom:6px;color:var(--muted);font-size:13.5px}
footer .f-cats-col h4{margin-bottom:14px}
footer .f-cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px 18px}
footer .f-cat-grid a{margin:0}
footer .f-bottom{border-top:1px solid var(--line);margin-top:30px;padding-top:18px;
  text-align:center;color:var(--primary-2);font-size:12.5px}
footer .f-bottom a{display:inline;color:var(--primary-2)}
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;
  transition:.3s;box-shadow:var(--shadow);z-index:60;font-size:20px}

/* 资质认证（左右滚动 + 左右按钮，隐藏滚动条） */
.cert-wrap{position:relative}
.cert-scroll{display:flex;gap:18px;overflow-x:auto;padding:6px 2px;scroll-behavior:smooth;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;-ms-overflow-style:none}
.cert-scroll::-webkit-scrollbar{display:none;width:0;height:0}
.cert-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:6;width:46px;height:46px;border:0;
  border-radius:50%;background:rgba(8,24,42,.62);color:#fff;font-size:26px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.22s;backdrop-filter:blur(4px);
  font-family:Georgia,serif;box-shadow:var(--shadow)}
.cert-nav.prev{left:-8px;padding-right:3px}
.cert-nav.next{right:-8px;padding-left:3px}
.cert-nav:hover{background:var(--accent);color:var(--primary)}
.cert-nav[disabled]{opacity:.32;cursor:default;pointer-events:none}
.cert{position:relative;flex:0 0 220px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:10px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;transition:.3s;aspect-ratio:257/368}
.cert::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--gold-2),var(--gold));transform:scaleX(0);transform-origin:left;transition:.3s}
.cert:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold-line)}
.cert:hover::before{transform:scaleX(1)}
.cert img{width:100%;height:100%;object-fit:contain;display:block}

/* reveal */
.reveal{opacity:1}
.js .reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}

/* hamburger */
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px}
.mobile-menu{display:none}
.mm-wrap{display:none}

@media(max-width:1180px){
  .brand-logo{height:44px}
  .menu>li>a{padding:0 11px;font-size:14px}
  .nav-search{margin-left:10px}
  .nav-search input{width:118px}
  .lv3g{grid-template-columns:repeat(3,1fr)}
  /* mega 菜单居中在「产品展示」上，窄屏会顶出右边界 → 收窄并左移 */
  .mega{width:820px;margin-left:-70px;padding:18px 20px;gap:18px}
}
@media(max-width:980px){
  .hero .wrap{grid-template-columns:1fr;padding:50px 24px 56px}
  .banner-slider .bs-track{aspect-ratio:16/9}
  .bs-dots{bottom:60px}
  .bs-arrow{width:40px;height:40px;font-size:20px}
  .bs-arrow.prev{left:12px}
  .bs-arrow.next{right:12px}
  .grid.c4,.grid.c3,.news,.pcat-grid,.catalog{grid-template-columns:repeat(2,1fr)}
  .cert{flex:0 0 190px}
  .feat,.contact-grid{grid-template-columns:1fr;gap:24px}
  /* 产品页：左侧分类树收起，改成 1 级 tab 条 */
  .plist{grid-template-columns:1fr;gap:0}
  .ptree{display:none}
  .lvtabs{display:flex;gap:8px;overflow-x:auto;padding:10px 0 12px;margin-bottom:14px;
    position:sticky;top:74px;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
  .lvtabs a{flex:0 0 auto;padding:7px 14px;border-radius:999px;background:var(--bg-soft);font-size:13px;font-weight:700;color:var(--primary);border:1px solid var(--gold-line)}
  .menu{display:none}
  .nav-right .nav-search{display:none}
  .burger{display:flex}
  .mm-wrap{display:block;position:fixed;inset:116px 0 0;overflow:hidden;z-index:60;pointer-events:none}
  .mobile-menu{display:block;position:absolute;inset:0;transform:translateX(100%);transition:.3s;overflow:auto;padding:18px 24px;list-style:none;background:#fff;pointer-events:auto}
  .mobile-menu.open{transform:none}
  .mobile-menu>li{border-bottom:1px solid var(--line);position:relative}
  .mobile-menu>li>a{display:block;padding:13px 4px;font-weight:600}
  .mobile-menu>li.has-mmsub>a{padding-right:46px}
  .mobile-menu>li.has-mmsub>.mm-arrow{position:absolute;right:4px;top:0;width:42px;height:49px}
  .mobile-menu>li.has-mmsub>.mm-arrow::after{margin:auto auto 2px auto}
  .mobile-menu>li.has-mmsub>.mm-arrow.open::after{margin:auto auto 2px auto}
  /* 「关于我们 / 新闻中心」等静态子菜单 */
  .mobile-menu>li>a{display:block;padding:13px 4px;font-weight:600}
  .mobile-menu>li.has-sub>a{padding-right:48px}
  .mobile-menu .m-toggle{position:absolute;inset:0 0 0 auto;width:48px;display:flex;align-items:center;justify-content:center;cursor:pointer}
  .mobile-menu .m-toggle::after{content:'';display:block;width:6px;height:6px;margin:auto;
    border-right:1.6px solid var(--muted);border-bottom:1.6px solid var(--muted);
    transform:rotate(45deg);transition:transform .2s}
  .mobile-menu .m-toggle.open::after{transform:rotate(-135deg);margin:auto auto 0 auto}
  .mobile-menu .sub{display:none;padding:0 0 8px;background:var(--bg-soft)}
  .mobile-menu .sub.open{display:block}
  .mobile-menu .sub a{display:block;padding:9px 14px;font-size:13.5px;color:var(--muted)}
  .mobile-menu .sub a:hover,.mobile-menu .sub a:active{color:var(--accent)}
}
@media(max-width:620px){
  .grid.c4,.grid.c3,.news,.grid.c2{grid-template-columns:1fr}
  .pcat-grid{grid-template-columns:repeat(2,1fr)}
  .catalog{grid-template-columns:1fr}
  .cert-scroll{gap:12px}
  .cert{flex:0 0 156px}
  .cert-nav{width:38px;height:38px;font-size:20px}
  .cert-nav.prev{left:-2px}
  .cert-nav.next{right:-2px}
  .pcat-img{height:104px}
  .section{padding:50px 0}
  .lv3g{grid-template-columns:repeat(2,1fr)}
  .lv3 .im{height:94px}
  .lv1-h{padding:14px 16px}
  .lv1-h h3{font-size:18px}
  .lv2{padding:14px 16px}
  footer .f-grid{grid-template-columns:1fr 1fr}
  .mega{grid-template-columns:1fr}
}
/* ============ 首页：shttv 版式组件 ============ */
.h-title{font-size:30px;margin-bottom:8px;letter-spacing:.5px;color:var(--primary)}
.h-title small{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:0;margin-left:10px}
/* 统一面包屑（> 分隔，灰字，当前项深灰加粗） */
.crumb-bar{background:#fff;border-bottom:1px solid #f0f0f0;margin-bottom:24px}
.crumb-bar .wrap{padding:12px 24px}
.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:#888;line-height:1.5}
.breadcrumbs a{color:#888;text-decoration:none;transition:color .2s}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs .sep{color:#bbb;font-family:Arial,sans-serif;font-size:12px;line-height:1}
.breadcrumbs strong{color:#333;font-weight:600}
.breadcrumbs a.cur{color:#333;font-weight:600;cursor:default}
.breadcrumbs a.cur:hover{color:var(--primary)}
.pc-sub{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:4px}
.pc-sub-t{font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.05em}
.pc-sub .ctag i{font-style:normal;margin-left:5px;font-size:11px;font-weight:700;color:var(--gold-text)}
.h-sub{color:var(--muted);font-size:15px;margin-bottom:36px;max-width:760px;line-height:1.8}
.h-bar{width:46px;height:4px;background:var(--accent);margin:10px 0 28px;border-radius:2px}
.section-header{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-title-wrap .h-bar{margin-bottom:16px}
.section-title-wrap .h-sub-en{font-size:12px;color:var(--primary-2);letter-spacing:2px;margin-top:6px;text-transform:uppercase;font-weight:700}
.section-more-wrap{text-align:right}
.h-tagline{font-size:14px;color:var(--muted);margin-bottom:8px;white-space:nowrap}
.h-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.h-more:hover{color:var(--accent)}
.hp-grid{display:grid;gap:22px}
.hp-grid.g4{grid-template-columns:repeat(4,1fr)}
.hp-grid.g3{grid-template-columns:repeat(3,1fr)}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:transparent;border-radius:4px}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-red{background:var(--accent);color:#fff;border-radius:4px}
.btn-red:hover{background:var(--gold-text);color:#fff}
.btn-sm{padding:8px 16px;font-size:13px}
.hp-hero{display:block;line-height:0}
.hp-hero img{width:100%;height:auto;max-height:600px;object-fit:cover;display:block}
.cat-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px 14px;transition:.2s;display:flex;flex-direction:column;align-items:center;height:100%}
.cat-card:hover{box-shadow:var(--shadow);border-color:var(--gold-line);transform:translateY(-3px)}
.cat-card .cat-img{height:170px;width:100%;display:flex;align-items:center;justify-content:center;background:#fbfcfe;border:1px solid var(--line);border-radius:8px;margin-bottom:14px;padding:12px;overflow:hidden}
.cat-card .cat-img img{max-height:100%;max-width:100%;object-fit:contain;transition:transform .35s ease}
.cat-card:hover .cat-img img{transform:scale(1.06)}
.cat-card:hover .cat-img{border-color:var(--gold-line)}
.cat-card .cat-name{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:8px}
.cat-card .cat-desc{font-size:13px;color:var(--muted);margin-bottom:14px;flex:1;min-height:38px}
.p-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:.2s;height:100%}
.p-card:hover{box-shadow:var(--shadow);border-color:var(--gold-line);transform:translateY(-3px)}
.p-card .p-img{height:240px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:16px;overflow:hidden}
.p-card .p-img img{width:100%;height:100%;object-fit:contain}
.p-card .p-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.p-card .p-model{font-size:12.5px;color:var(--accent);font-weight:700;letter-spacing:.5px;margin-bottom:4px}
.p-card .p-name{font-size:15.5px;font-weight:600;color:var(--primary);margin-bottom:8px;min-height:42px}
.p-card .p-desc{font-size:12.5px;color:var(--muted);line-height:1.6;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:38px}
.p-card .p-spec{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.p-card .p-spec span{font-size:12px;color:var(--muted);background:var(--bg-soft);border:1px solid var(--line);border-radius:20px;padding:2px 9px}
.p-card .p-link{margin-top:auto}
.ind-card{position:relative;overflow:hidden;min-height:230px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;padding:24px;border-radius:8px}
.ind-card .ind-bg{position:absolute;inset:0;background:linear-gradient(135deg,var(--primary),var(--primary-2));z-index:0}
.ind-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(8,36,61,.92),rgba(8,36,61,.35));z-index:1}
.ind-card>*{position:relative;z-index:2}
.ind-card h3{color:#fff;font-size:21px;margin-bottom:6px}
.ind-card .ind-cond{font-size:13.5px;color:#cfe0ee;margin-bottom:12px}
.ind-card .ind-tags{display:flex;flex-wrap:wrap;gap:6px}
.ind-card .ind-tags a,.ind-card .ind-tags span{font-size:12px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);padding:3px 10px;border-radius:20px;color:#fff;text-decoration:none;display:inline-block}
.ind-card .ind-tags a:hover{background:#fff;color:var(--primary);border-color:#fff}
.ind-card .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.4)}
.ind-card .btn-ghost:hover{background:#fff;color:var(--primary)}
.art-card{padding:22px;background:#fff;border:1px solid var(--line);border-radius:8px;display:flex;flex-direction:column;transition:.2s;height:100%}
.art-card:hover{box-shadow:var(--shadow);border-color:var(--gold-line);transform:translateY(-3px)}
.art-card .art-cat{font-size:12px;color:var(--accent);font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:8px}
.art-card .art-title{font-size:17px;font-weight:600;color:var(--primary);margin-bottom:10px;line-height:1.4}
.art-card .art-title a{color:inherit}
.art-card .art-date{font-size:12.5px;color:var(--muted);margin-bottom:10px}
.art-card .art-sum{font-size:13.5px;color:var(--muted);flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.art-card .art-more{font-size:13px;font-weight:600;margin-top:auto;color:var(--primary-2)}
.art-card .art-more:hover{color:var(--accent)}
.factory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.factory-grid img{width:100%;height:200px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.about-text p{margin-bottom:14px;color:var(--muted);font-size:14.5px}
/* 首页「关于我们」右侧：图片位换成视频 */
.about-grid-video .about-text p.about-lead{font-size:15px;line-height:1.86;color:var(--ink)}
.about-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--primary);box-shadow:var(--shadow)}
.about-video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--primary)}
.hp-cta{background:linear-gradient(120deg,var(--primary),var(--primary-2));color:#fff;padding:46px 0}
.hp-cta .hp-cta-in{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.hp-cta h2{color:#fff;font-size:26px;margin-bottom:8px}
.hp-cta p{color:#cdd9e3;font-size:15px}
/* ============ 行业应用页（按用户图片版面） ============ */
.ind-crumb-bar{background:#fff;border-bottom:1px solid #f0f0f0}
.ind-crumb-bar .wrap{padding:12px 24px}

.ind-pills{position:sticky;top:116px;z-index:30;display:flex;flex-wrap:wrap;gap:10px;
  background:#fff;padding:12px 0;margin:0 0 36px}
.ind-pill{flex:0 0 auto;padding:9px 20px;border:1px solid var(--line);border-radius:999px;
  background:#fff;color:var(--primary);font-size:14px;font-weight:600;transition:.2s}
.ind-pill:hover{border-color:var(--primary);color:var(--primary)}
.ind-pill.on{background:var(--primary);border-color:var(--primary);color:#fff}

.ind-block{scroll-margin-top:170px;padding:46px 0;border-bottom:1px dashed var(--line)}
.ind-block:last-of-type{border-bottom:none}
.ind-head{margin-bottom:22px}
.ind-head-t h2{font-size:clamp(22px,2.6vw,30px);color:var(--primary);letter-spacing:.03em;font-weight:800;margin-bottom:8px}
.ind-head-t h2 span{margin-left:10px;font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.12em;text-transform:uppercase}
.ind-head-t p{color:var(--muted);font-size:14.5px;line-height:1.8;max-width:860px}

.ind-body{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
.ind-left{position:sticky;top:120px;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:22px;align-self:start}
.ind-sub{margin-bottom:24px}
.ind-sub:last-child{margin-bottom:0}
.ind-sub>h3{font-size:15px;color:var(--primary);font-weight:700;margin-bottom:14px;letter-spacing:.04em;
  display:flex;align-items:center;gap:8px}
.ind-sub>h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--accent);flex:0 0 auto}
.ind-cond{list-style:none;display:flex;flex-direction:column;gap:10px}
.ind-cond li{position:relative;padding-left:20px;font-size:14px;color:var(--ink);line-height:1.6}
.ind-cond li::before{content:"";position:absolute;left:4px;top:9px;width:7px;height:7px;border-radius:50%;
  border:2px solid var(--primary);box-sizing:border-box}

/* 推荐阀门：白色胶囊 badge */
.ind-valves{display:flex;flex-wrap:wrap;gap:8px}
.ind-valves a,.ind-valves span{display:inline-flex;align-items:center;font-size:13px;padding:6px 14px;
  border-radius:20px;border:1px solid var(--line);color:var(--primary);background:#fff;transition:.2s}
.ind-valves a:hover{border-color:var(--primary);background:var(--primary);color:#fff}

/* 推荐产品卡片：白底 + 阴影 + 红型号 + 蓝品名 + 边框按钮 */
.ind-prods{gap:18px}
.ind-prod{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;
  box-shadow:0 8px 24px -16px rgba(6,18,32,.28);transition:.2s;display:flex;flex-direction:column}
.ind-prod:hover{box-shadow:0 14px 34px -14px rgba(6,18,32,.36);border-color:var(--gold-line);transform:translateY(-3px)}
.ind-prod-img{display:flex;align-items:center;justify-content:center;height:210px;background:#fff;padding:16px;overflow:hidden}
.ind-prod-img img{max-height:100%;max-width:100%;object-fit:contain;transition:.3s}
.ind-prod:hover .ind-prod-img img{transform:scale(1.04)}
.ind-prod-body{padding:16px 18px 20px;display:flex;flex-direction:column;flex:1}
.ind-prod-model{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.04em;margin-bottom:6px}
.ind-prod-name{font-size:15px;font-weight:600;color:var(--primary);line-height:1.45;margin-bottom:16px;min-height:44px}
.ind-prod-name a{color:inherit}
.ind-prod-name a:hover{color:var(--accent)}
.ind-prod-link{display:block;text-align:center;padding:9px 14px;border:1px solid var(--primary);
  border-radius:6px;color:var(--primary);font-size:13.5px;font-weight:600;transition:.2s;margin-top:auto}
.ind-prod-link:hover{background:var(--primary);color:#fff}
.ind-prod-empty{min-height:180px;display:flex;align-items:center;justify-content:center;color:var(--muted);
  font-size:14px;background:var(--bg-soft);border:1px dashed var(--line);border-radius:10px}
.empty-tip{text-align:center;color:var(--muted);font-size:14px;padding:40px 0}

/* 首页行业卡片：图标上移，内容紧凑 */
.hp-grid .ind-card{justify-content:flex-start;min-height:280px}
.hp-grid .ind-card .ind-ico{margin-bottom:14px}
.hp-grid .ind-card .ind-tags{margin-bottom:14px}

@media(max-width:1024px){
  .ind-body{grid-template-columns:1fr;gap:26px}
  .hp-grid.g4{grid-template-columns:repeat(3,1fr)}
  .factory-grid{grid-template-columns:repeat(3,1fr)}
  footer .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .ind-block{padding:32px 0}
  .ind-head{margin-bottom:18px}
  .ind-left{position:static;padding:18px}
  .ind-prod-img{height:180px}
  .hp-grid.g4,.hp-grid.g3{grid-template-columns:repeat(2,1fr)}
  .factory-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr;gap:24px}
  .section-header{flex-direction:column;align-items:flex-start}
  .section-more-wrap{text-align:left}
  .h-title{font-size:24px}
}
@media(max-width:560px){
  .hp-grid.g4,.hp-grid.g3{grid-template-columns:1fr}
  .factory-grid{grid-template-columns:1fr 1fr}
  footer .f-grid{grid-template-columns:1fr}
  footer .f-cat-grid{grid-template-columns:1fr}
}

/* product detail */
.pd-head{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.pd-media{background:var(--bg-soft);border-radius:12px;padding:24px;display:flex;align-items:center;justify-content:center;min-height:360px;min-width:0}
.pd-media img{max-height:340px;width:auto;object-fit:contain}

/* ===== 产品详情页：多图轮播（无 JS 时第一张仍可见） ===== */
/* min-width:0 必需：.pd-media 是 flex 容器，flex 项默认 min-width:auto 撑破窄屏 */
.pd-gallery{width:100%;min-width:0;flex:1 1 auto}
.pd-gal-stage{position:relative;background:#fff;border-radius:10px}
.pd-gal-view{position:relative;overflow:hidden;border-radius:10px;min-height:240px}
.pd-gal-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .32s ease}
.pd-gal-slide.is-on{position:relative;opacity:1;visibility:visible}
.pd-gal-slide img{width:100%;max-height:360px;height:auto;object-fit:contain;display:block;margin:0 auto}
.pd-gal-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:38px;height:38px;border:none;border-radius:50%;
  background:rgba(16,43,78,.45);color:#fff;font-size:24px;line-height:36px;
  cursor:pointer;transition:background .18s;
}
.pd-gal-arrow:hover{background:rgba(16,43,78,.78)}
.pd-gal-prev{left:10px}
.pd-gal-next{right:10px}
.pd-gal-count{
  position:absolute;right:12px;bottom:12px;z-index:3;
  background:rgba(16,43,78,.55);color:#fff;border-radius:14px;
  padding:2px 10px;font-size:12px;letter-spacing:.5px;
}
.pd-gal-count em{font-style:normal;font-weight:600}

/* ===== 关于我们（参考 shttv 版式） ===== */
/* 公司简介：右侧图片 */
.about-media .about-img{display:block;width:100%;height:100%;object-fit:contain;background:#fff;padding:28px}

/* 制造能力：居中短文 */
.ab-ability{max-width:900px;margin:0 auto;text-align:center}
.ab-ability p{color:var(--muted);font-size:15px;line-height:1.9;margin-bottom:16px}
.ab-ability p:last-child{margin-bottom:0}

/* 生产流程 */
.process-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.process-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;transition:.25s}
.process-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(17,68,110,.34)}
.process-num{width:42px;height:42px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;margin-bottom:14px}
.process-item h4{font-size:16px;color:var(--primary);margin-bottom:8px}
.process-item p{color:var(--muted);font-size:13.5px;line-height:1.75}

/* 生产设备：带图注 */
.eq-card{position:relative;overflow:hidden;border-radius:8px;border:1px solid var(--line)}
.eq-card img{width:100%;height:200px;object-fit:cover;display:block}
.eq-card span{position:absolute;left:0;right:0;bottom:0;background:rgba(16,43,78,.78);color:#fff;font-size:13px;padding:8px 12px;text-align:center}

/* 主要产品卡片「查看系列」靠右 */
.pcat-foot .more{margin-left:auto}

@media(max-width:1024px){
  .process-list{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:860px){
  .process-list{grid-template-columns:repeat(2,1fr)}
  .eq-card img{height:160px}
}
@media(max-width:560px){
  .process-list{grid-template-columns:1fr}
  .eq-card img{height:140px}
}
.pd-gal-thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:2px}
.pd-gal-thumb{
  flex:0 0 76px;width:76px;height:76px;padding:0;
  border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer;overflow:hidden;
  transition:border-color .16s,box-shadow .16s;
}
.pd-gal-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.pd-gal-thumb:hover{border-color:var(--gold-line)}
.pd-gal-thumb.is-on{border-color:var(--accent);box-shadow:0 0 0 2px rgba(224,168,46,.28)}
.pd-info{min-width:0}
.pd-info h1{font-size:26px;color:var(--primary);margin-bottom:10px}
.pd-model{font-size:18px;color:var(--accent);font-weight:700;margin-bottom:18px}
.pd-meta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
.pd-meta span{display:inline-flex;align-items:center;gap:6px;background:var(--bg-soft);border:1px solid var(--line);border-radius:20px;padding:6px 14px;font-size:13px;color:var(--muted)}
.pd-actions{display:flex;gap:12px;flex-wrap:wrap}
.pd-actions .btn-primary{background:var(--accent);box-shadow:none}
.pd-actions .btn-outline{border-color:var(--line);color:var(--ink)}
.pd-actions .btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.pd-block{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.pd-title{display:flex;align-items:center;gap:10px;font-size:18px;color:var(--primary);margin-bottom:18px}
.pd-title span{width:4px;height:18px;background:var(--accent);border-radius:2px}
.pd-content{color:var(--muted);font-size:14.5px;line-height:1.7}
.pd-content p{margin-bottom:10px}
.pd-content h3{margin:18px 0 12px;font-size:16px;color:var(--primary)}
.pd-content img{display:block;max-width:100%;height:auto;margin:14px auto}
.pd-content video{display:block;max-width:100%;height:auto;margin:14px 0 18px}
.pd-content br{display:block;content:"";margin-bottom:6px}
.pd-content br+br{display:none}
.pd-content p:empty,
.pd-content p:has(br:only-child){display:none}

/* 详情页 上一条/下一条 / 上一个/下一个 */
.pn-nav{display:flex;gap:16px;flex-wrap:wrap;margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}
.pn-link{flex:1 1 0;min-width:200px;display:flex;flex-direction:column;gap:4px;padding:14px 16px;
  border:1px solid var(--line);border-radius:12px;color:var(--ink);transition:.2s;background:#fff}
.pn-link:hover{border-color:var(--primary);background:var(--bg-soft);transform:translateY(-2px);box-shadow:var(--shadow)}
.pn-link.pn-next{text-align:right;align-items:flex-end}
.pn-link.pn-empty{border:none;background:none;box-shadow:none;transform:none;pointer-events:none}
.pn-dir{font-size:12px;font-weight:600;color:var(--muted)}
.pn-t{font-size:15px;font-weight:700;color:var(--primary);line-height:1.4}
.pd-table{width:100%;border-collapse:collapse;font-size:14px}
.pd-table th,.pd-table td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.pd-table th{width:220px;color:var(--muted);font-weight:500;background:var(--bg-soft)}
.pd-table td{color:var(--ink)}
.pd-figure{display:flex;justify-content:center;background:var(--bg-soft);border-radius:12px;padding:20px}
.pd-figure img{max-width:100%;height:auto}
.pd-docs{list-style:none}
.pd-docs li+li{border-top:1px solid var(--line);margin-top:10px;padding-top:10px}
.pd-docs a{display:flex;align-items:center;gap:10px;color:var(--primary);font-size:14px}
.pd-docs a:hover{color:var(--accent)}
.pd-related{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.2s}
.pd-related:hover{border-color:var(--gold-line);box-shadow:var(--shadow);transform:translateY(-3px)}
.pd-related .im{height:140px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center}
.pd-related .im span{font-size:13px;color:var(--muted);padding:10px;text-align:center}
.pd-related .im img{height:100%;width:100%;object-fit:contain;background:#fff;padding:8px}
.pd-related .tx{padding:12px}
.pd-related .tx .n{font-size:14px;font-weight:600;color:var(--primary);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pd-related .tx .m{font-size:12px;color:var(--muted);margin-top:4px;display:block}
@media(max-width:860px){
  .pd-head{grid-template-columns:1fr}
  .mega{width:96vw;left:2%;transform:none;grid-template-columns:repeat(2,1fr);gap:16px;padding:16px}
  .mega{transform:translateY(8px)}
  .menu>li:hover .mega{transform:translateY(0)}
}
@media(max-width:560px){
  .mega{grid-template-columns:1fr}
  .pd-media{min-height:240px}
}

/* ===== 产品中心：分类树（左侧）— 全站只有「分类」，层级靠引导符 + 色阶 ===== */
.tn{list-style:none;margin:0;padding:0}
.tn>li{border-top:1px solid #eef2f7}
.tn>li:first-child{border-top:0}
.tn-a{position:relative;display:flex;align-items:center;gap:0;padding:6px 9px 6px 8px;
  font-size:13px;color:#42505e;line-height:1.4;transition:background .16s,color .16s}
.tn-a::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:transparent;transition:background .16s}
.tn-a:hover{background:#f4f7fb;color:var(--primary)}
/* 引导符：文件树 ├ └ */
.tn-g{flex:0 0 auto;white-space:pre;color:#c2cbd6;font-size:12px;user-select:none;letter-spacing:0}
.tn-t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tn-a em{font-style:normal;flex:0 0 auto;margin-left:6px;font-size:10.5px;font-weight:700;color:#a99255;
  background:#faf4e4;border-radius:999px;padding:1px 6px}
/* 仍有下级的分类：尾部一个小三角示意，与叶子区分 */
.tn-more{flex:0 0 auto;width:0;height:0;margin-right:7px;border-left:4px solid #cfd8e2;
  border-top:3px solid transparent;border-bottom:3px solid transparent;transition:border-left-color .16s}
.tn-a:hover .tn-more{border-left-color:#8fa6bd}

/* 层级色阶：一级最深最粗，往下逐级变浅变小；层级差异只靠字号/字重/颜色 */
.tn>.tn-lv1>.tn-a{font-size:14.5px;font-weight:800;color:var(--ink);letter-spacing:.01em;
  background:#f8fafd;border-radius:6px 6px 0 0;margin-bottom:1px}
.tn>.tn-lv1>.tn-a .tn-g{display:inline-block;min-width:1.05em}
.tn>.tn-lv1>.tn-a:hover{background:#eef3f9}
.tn>.tn-lv1:not(:first-child){margin-top:7px}
.tn>.tn-lv1:not(:first-child)>.tn-a{border-radius:6px}
.tn>.tn-lv2>.tn-a{font-size:13px;font-weight:600;color:#3f4d5c}
.tn>.tn-lv3>.tn-a{font-size:12.3px;font-weight:500;color:#7b8695}
.tn>.tn-lv3>.tn-a .tn-g{font-size:11px}
.tn>.tn-lv3>.tn-a .tn-t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 当前选中 */
.tn-a.on{background:#fdf5e2;color:#8a6d1f;font-weight:700}
.tn-a.on::before{background:var(--gold-text)}
.tn-a.on .tn-t{color:#8a6d1f}
.tn-a.on em{background:#f3e6c3;color:#8a6d1f}
.tn-a.on .tn-more{border-left-color:var(--gold-text)}

/* ===== 产品中心：按层级展示（右侧） ===== */
.lv1-b{padding-bottom:2px}
.lv2-h h4 a{color:inherit}
.lv2-h h4 a:hover{color:var(--accent)}
.lv2-more{margin-left:auto;font-size:12.5px;color:var(--accent);font-weight:700;white-space:nowrap}
.lv2-more:hover{text-decoration:underline}

.lv3g-empty{padding:10px 12px;font-size:12.5px;color:#8a94a6;
  background:#f7f9fc;border:1px dashed #dbe3ec;border-radius:8px}

/* ===== 新闻中心改版（仿 shttv.com/tech.htm 风格） ===== */
.sub-hero{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;padding:44px 0}
.sub-hero h1{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:8px;letter-spacing:.04em}
.sub-hero p{color:rgba(255,255,255,.74);font-size:14.5px;max-width:760px;line-height:1.7}

.news-page{padding:28px 24px 60px}

/* 工具条：搜索 + 数量（仿 .pc-toolbar） */
.news-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin:0 0 18px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.news-search{display:flex;flex:1;min-width:240px;max-width:440px}
.news-search input{flex:1;border:1px solid var(--line);border-right:none;padding:10px 14px;font-size:14px;
  border-radius:var(--radius) 0 0 var(--radius);outline:none;background:var(--bg-soft);font-family:inherit;color:var(--ink);transition:.2s}
.news-search input:focus{border-color:var(--accent);background:#fff}
.news-search button{background:var(--primary);color:#fff;border:none;padding:0 20px;border-radius:0 var(--radius) var(--radius) 0;
  cursor:pointer;font-size:14px;font-family:inherit;transition:.2s}
.news-search button:hover{background:var(--primary-2)}
.news-count{font-size:13px;color:var(--muted);white-space:nowrap}

/* 分类筛选胶囊（仿 .cat-filter） */
.news-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.nf-pill{display:inline-flex;align-items:center;border:1px solid var(--line);background:#fff;color:var(--muted);
  padding:7px 16px;font-size:13.5px;border-radius:20px;cursor:pointer;transition:.15s}
.nf-pill:hover{border-color:var(--accent);color:var(--primary)}
.nf-pill.on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}

/* 卡片网格（仿 .grid.grid-3 + .art-card） */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  padding:22px 22px 18px;display:flex;flex-direction:column;transition:.18s}
.news-card:hover{border-color:var(--gold-line);box-shadow:var(--shadow);transform:translateY(-3px)}
.nc-cat{font-size:12px;color:var(--accent);font-weight:700;letter-spacing:1px;margin-bottom:8px}
.nc-title{font-size:17px;font-weight:600;color:var(--primary);margin-bottom:10px;line-height:1.4}
.nc-date{font-size:12.5px;color:var(--muted);margin-bottom:10px}
.nc-sum{font-size:13.5px;color:var(--muted);flex:1;display:-webkit-box;-webkit-line-clamp:3;
  -webkit-box-orient:vertical;overflow:hidden;line-height:1.65}
.nc-more{font-size:13px;font-weight:600;margin-top:14px;color:var(--primary)}
.news-card:hover .nc-more{color:var(--accent)}

/* 空态 */
.news-empty{text-align:center;color:var(--muted);padding:60px 0;font-size:15px}

/* 分页（仿 .pagination） */
.news-pagi{display:flex;justify-content:center;gap:6px;margin:36px 0 8px;flex-wrap:wrap}
.pg{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;
  border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:14px;background:#fff;transition:.15s}
a.pg:hover{border-color:var(--accent);color:var(--primary)}
.pg.on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:700}
.pg.disabled,.pg.gap{color:#b6c2cd;border-color:transparent;background:none;cursor:default}

@media(max-width:900px){
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .news-grid{grid-template-columns:1fr}
  .news-toolbar{flex-direction:column;align-items:stretch}
  .news-search{max-width:none}
  .sub-hero{padding:32px 0}
}